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List:       openjdk-serviceability-dev
Subject:    RE: jstack mixed mode and jhsdb stack mixed mode can not get expected result(stack trace is incomple
From:       Shuai Gao <shuai.gao () oracle ! com>
Date:       2019-02-15 10:38:48
Message-ID: 1e3c822f-c8e9-4e08-b774-acb4c2d37018 () default
[Download RAW message or body]

Hello Sharath,

  

Thanks for your help.

  

Best Regards

  

From: Sharath Ballal 
Sent: 2019年2月15日 18:10
To: Shuai Gao <shuai.gao@oracle.com>; serviceability-dev@openjdk.java.net
Subject: RE: jstack mixed mode and jhsdb stack mixed mode can not get expected \
result(stack trace is incomplete) on latest ubuntu or fedora or RHEL 8 beta

  

Ok Gao.   I will open another bug for your case.

  

Thanks,

Sharath

  

  

From: Shuai Gao 
Sent: Friday, February 15, 2019 3:35 PM
To: Sharath Ballal; HYPERLINK \
                "mailto:serviceability-dev@openjdk.java.net"serviceability-dev@openjdk.java.net
                
Subject: RE: jstack mixed mode and jhsdb stack mixed mode can not get expected \
result(stack trace is incomplete) on latest ubuntu or fedora or RHEL 8 beta

  

Hello Sharath,

  

Thanks for your reply.

I am afraid the issue in BUG JDK—8219086 is not the same as mine.

In the bug, the output of jhsdb jstack prints some mixed stack trace but does not \
print all the threads.

Within my issue, the output of jhsdb jstack can print all the threads but can only \
print the top of the stack trace.

And this issue can always be reproduced on latest Ubuntu (18.04),fedora (29) and RHEL \
8 Beta.

On the aforementioned OSs , The pstack can work well with java application. I am \
afraid there is something about compatibility between JDK and new Linux kernel or \
ptrace.

  

Best Regards

  

  

  

From: Sharath Ballal 
Sent: 2019年2月15日 17:46
To: Shuai Gao <HYPERLINK "mailto:shuai.gao@oracle.com"shuai.gao@oracle.com>; \
HYPERLINK "mailto:serviceability-dev@openjdk.java.net"serviceability-dev@openjdk.java.net
                
Subject: RE: jstack mixed mode and jhsdb stack mixed mode can not get expected \
result(stack trace is incomplete) on latest ubuntu or fedora or RHEL 8 beta

  

Hi Gao,

  

I also observed this failure and opened HYPERLINK \
"https://bugs.openjdk.java.net/browse/JDK-8219086"JDK-8219086 for it.

  

  

Thanks,

Sharath

  

  

From: Shuai Gao 
Sent: Friday, February 15, 2019 12:15 PM
To: HYPERLINK "mailto:serviceability-dev@openjdk.java.net"serviceability-dev@openjdk.java.net
                
Subject: jstack mixed mode and jhsdb stack mixed mode can not get expected \
result(stack trace is incomplete) on latest ubuntu or fedora or RHEL 8 beta

  

Hello,

  

I tried "jstack -m PID"in latest openjdk 8 64-bit and "jhsdb jstack –mixed –pid \
PID" in latest openjdk 11 64-bit on latest Ubuntu(18.04) and latest fedora (29) and \
RHEL 8 Beta.

The stack traces returned are always incomplete like following output:

  

----------------- 1479 -----------------

"DestroyJavaVM" #17 prio=5 tid=0x0000000000bae000 nid=0x5c7 waiting on condition \
[0x0000000000000000]

     java.lang.Thread.State: RUNNABLE

     JavaThread state: _thread_blocked

0x00007f839224f9f3   __pthread_cond_wait + 0x243

----------------- 1480 -----------------

----------------- 1481 -----------------

"Reference Handler" #2 daemon prio=10 tid=0x0000000000c36000 nid=0x5c9 waiting on \
condition [0x00007f8376d15000]

     java.lang.Thread.State: RUNNABLE

     JavaThread state: _thread_blocked

0x00007f839224f9f3   __pthread_cond_wait + 0x243

----------------- 1482 -----------------

"Finalizer" #3 daemon prio=8 tid=0x0000000000c3a000 nid=0x5ca in Object.wait() \
[0x00007f8376c14000]

     java.lang.Thread.State: WAITING (on object monitor)

     JavaThread state: _thread_blocked

0x00007f839224f9f3   __pthread_cond_wait + 0x243

----------------- 1483 -----------------

"Signal Dispatcher" #4 daemon prio=9 tid=0x0000000000c56800 nid=0x5cb runnable \
[0x0000000000000000]

     java.lang.Thread.State: RUNNABLE

     JavaThread state: _thread_blocked

0x00007f83922526d6   do_futex_wait.constprop.1 + 0x36

  

The issue existed even after I disable the selinux. It can not be reproduced on \
oracle linux 7.4.

The kernel version on Ubuntu or fedora is 4.15. the kernel version on RHEL 8 Beta is \
4.18. the kernel version on Oracle linux 7.4 is 3.1.

I can not find any existed bug for now.

  

  

Is there any clue about this issue?

  

Any reply will be appreciated.

  

Best Regards

Gao Shuai from GCS


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</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link="#0563C1" \
vlink="#954F72" style='text-justify-trim:punctuation'><div class=WordSection1><p \
class=MsoNormal><span lang=EN-US style='color:#1F497D'>Hello \
Sharath,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US \
style='color:#1F497D'><o:p>&nbsp;</o:p></span></p><p class=MsoNormal><span lang=EN-US \
style='color:#1F497D'>Thanks for your help.<o:p></o:p></span></p><p \
class=MsoNormal><span lang=EN-US style='color:#1F497D'><o:p>&nbsp;</o:p></span></p><p \
class=MsoNormal><span lang=EN-US style='color:#1F497D'>Best \
Regards<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US \
style='color:#1F497D'><o:p>&nbsp;</o:p></span></p><div><div \
style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p \
class=MsoNormal align=left style='text-align:left'><b><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span \
lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif'> Sharath Ballal \
<br><b>Sent:</b> 2019</span><span \
style='font-size:11.0pt;font-family:宋体'>年</span><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri",sans-serif'>2</span><span \
style='font-size:11.0pt;font-family:宋体'>月</span><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri",sans-serif'>15</span><span \
style='font-size:11.0pt;font-family:宋体'>日</span><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri",sans-serif'> 18:10<br><b>To:</b> Shuai \
Gao &lt;shuai.gao@oracle.com&gt;; \
serviceability-dev@openjdk.java.net<br><b>Subject:</b> RE: jstack mixed mode and \
jhsdb stack mixed mode can not get expected result(stack trace is incomplete) on \
latest ubuntu or fedora or RHEL 8 beta<o:p></o:p></span></p></div></div><p \
class=MsoNormal align=left style='text-align:left'><span \
lang=EN-US><o:p>&nbsp;</o:p></span></p><p class=MsoNormal><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Ok Gao.&nbsp; \
I will open another bug for your case.<o:p></o:p></span></p><div><p class=MsoNormal \
align=left style='text-align:left'><span lang=EN-US \
style='font-size:12.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p>&nbsp;</o:p></span></p><p \
class=MsoNormal align=left style='text-align:left'><span lang=EN-US \
style='font-size:12.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Thanks,<o:p></o:p></span></p><p \
class=MsoNormal align=left style='text-align:left'><span lang=EN-US \
style='font-size:12.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Sharath<o:p></o:p></span></p><p \
class=MsoNormal align=left style='text-align:left'><span lang=EN-US \
style='font-size:12.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p>&nbsp;</o:p></span></p></div><p \
class=MsoNormal><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p>&nbsp;</o:p></span></p><div><div \
style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p \
class=MsoNormal align=left style='text-align:left'><b><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span \
lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif'> Shuai Gao \
<br><b>Sent:</b> Friday, February 15, 2019 3:35 PM<br><b>To:</b> Sharath Ballal; <a \
href="mailto:serviceability-dev@openjdk.java.net">serviceability-dev@openjdk.java.net</a><br><b>Subject:</b> \
RE: jstack mixed mode and jhsdb stack mixed mode can not get expected result(stack \
trace is incomplete) on latest ubuntu or fedora or RHEL 8 \
beta<o:p></o:p></span></p></div></div><p class=MsoNormal align=left \
style='text-align:left'><span lang=EN-US><o:p>&nbsp;</o:p></span></p><p \
class=MsoNormal><span lang=EN-US style='color:#1F497D'>Hello </span><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri",sans-serif'>Sharath</span><span \
lang=EN-US style='color:#1F497D'>,<o:p></o:p></span></p><p class=MsoNormal><span \
lang=EN-US style='color:#1F497D'><o:p>&nbsp;</o:p></span></p><p class=MsoNormal><span \
lang=EN-US style='color:#1F497D'>Thanks for your reply.<o:p></o:p></span></p><p \
class=MsoNormal><span lang=EN-US style='color:#1F497D'>I am afraid the</span><span \
lang=EN-US style='color:#1F497D'> issue in BUG JDK</span><span \
style='color:#1F497D'>—<span lang=EN-US>82190</span></span><span lang=EN-US \
style='color:#1F497D'>86 is not the same as mine.<o:p></o:p></span></p><p \
class=MsoNormal><span lang=EN-US style='color:#1F497D'>In the bug, the output of \
jhsdb jstack prints some mixed stack trace but does not print all the \
threads.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US \
style='color:#1F497D'>Within my issue, the output of jhsdb jstack can print all the \
threads but can only print the top of the stack trace.<o:p></o:p></span></p><p \
class=MsoNormal><span lang=EN-US style='color:#1F497D'>And this issue can always be \
reproduced on latest Ubuntu (18.04),fedora (29) and RHEL 8 \
Beta.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US \
style='color:#1F497D'>On the aforementioned OSs , The pstack can work well with java \
application. I am afraid there is something about compatibility between JDK and new \
Linux kernel or ptrace.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US \
style='color:#1F497D'><o:p>&nbsp;</o:p></span></p><p class=MsoNormal><span lang=EN-US \
style='color:#1F497D'>Best Regards<o:p></o:p></span></p><p class=MsoNormal><span \
lang=EN-US style='color:#1F497D'><o:p>&nbsp;</o:p></span></p><p class=MsoNormal><span \
lang=EN-US style='color:#1F497D'><o:p>&nbsp;</o:p></span></p><p class=MsoNormal><span \
lang=EN-US style='color:#1F497D'><o:p>&nbsp;</o:p></span></p><div><div \
style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p \
class=MsoNormal align=left style='text-align:left'><b><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span \
lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif'> Sharath Ballal \
<br><b>Sent:</b> 2019</span><span \
style='font-size:11.0pt;font-family:宋体'>年</span><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri",sans-serif'>2</span><span \
style='font-size:11.0pt;font-family:宋体'>月</span><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri",sans-serif'>15</span><span \
style='font-size:11.0pt;font-family:宋体'>日</span><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri",sans-serif'> 17:46<br><b>To:</b> Shuai \
Gao &lt;<a href="mailto:shuai.gao@oracle.com">shuai.gao@oracle.com</a>&gt;; <a \
href="mailto:serviceability-dev@openjdk.java.net">serviceability-dev@openjdk.java.net</a><br><b>Subject:</b> \
RE: jstack mixed mode and jhsdb stack mixed mode can not get expected result(stack \
trace is incomplete) on latest ubuntu or fedora or RHEL 8 \
beta<o:p></o:p></span></p></div></div><p class=MsoNormal align=left \
style='text-align:left'><span lang=EN-US><o:p>&nbsp;</o:p></span></p><p \
class=MsoNormal><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Hi \
Gao,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p>&nbsp;</o:p></span></p><p \
class=MsoNormal><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>I also \
observed this failure and opened </span><span lang=EN-US><a \
href="https://bugs.openjdk.java.net/browse/JDK-8219086">JDK-8219086</a> for \
it.</span><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p></o:p></span></p><p \
class=MsoNormal><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p>&nbsp;</o:p></span></p><div><p \
class=MsoNormal align=left style='text-align:left'><span lang=EN-US \
style='font-size:12.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p>&nbsp;</o:p></span></p><p \
class=MsoNormal align=left style='text-align:left'><span lang=EN-US \
style='font-size:12.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Thanks,<o:p></o:p></span></p><p \
class=MsoNormal align=left style='text-align:left'><span lang=EN-US \
style='font-size:12.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Sharath<o:p></o:p></span></p><p \
class=MsoNormal align=left style='text-align:left'><span lang=EN-US \
style='font-size:12.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p>&nbsp;</o:p></span></p></div><p \
class=MsoNormal><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p>&nbsp;</o:p></span></p><div><div \
style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p \
class=MsoNormal align=left style='text-align:left'><b><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span \
lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif'> Shuai Gao \
<br><b>Sent:</b> Friday, February 15, 2019 12:15 PM<br><b>To:</b> <a \
href="mailto:serviceability-dev@openjdk.java.net">serviceability-dev@openjdk.java.net</a><br><b>Subject:</b> \
jstack mixed mode and jhsdb stack mixed mode can not get expected result(stack trace \
is incomplete) on latest ubuntu or fedora or RHEL 8 \
beta<o:p></o:p></span></p></div></div><p class=MsoNormal align=left \
style='text-align:left'><span lang=EN-US><o:p>&nbsp;</o:p></span></p><p \
class=MsoNormal><span lang=EN-US>Hello,<o:p></o:p></span></p><p class=MsoNormal><span \
lang=EN-US><o:p>&nbsp;</o:p></span></p><p class=MsoNormal><span lang=EN-US>I tried \
</span>"<span lang=EN-US>jstack -m PID</span>"<span lang=EN-US>in latest openjdk 8 \
64-bit and </span>"<span lang=EN-US>jhsdb jstack </span>–<span lang=EN-US>mixed \
</span>–<span lang=EN-US>pid PID</span>"<span lang=EN-US> in latest openjdk 11 \
64-bit on latest Ubuntu(18.04) and latest fedora (29) and RHEL 8 \
Beta.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>The stack traces \
returned are always incomplete like following output:<o:p></o:p></span></p><p \
class=MsoNormal><span lang=EN-US><o:p>&nbsp;</o:p></span></p><p class=MsoNormal><span \
lang=EN-US>----------------- 1479 -----------------<o:p></o:p></span></p><p \
class=MsoNormal><span lang=EN-US>&quot;DestroyJavaVM&quot; #17 prio=5 \
tid=0x0000000000bae000 nid=0x5c7 waiting on condition \
[0x0000000000000000]<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US \
style='font-family:宋体'>&nbsp;&nbsp;</span><span lang=EN-US> \
java.lang.Thread.State: RUNNABLE<o:p></o:p></span></p><p class=MsoNormal><span \
lang=EN-US style='font-family:宋体'>&nbsp;&nbsp;</span><span lang=EN-US> JavaThread \
state: _thread_blocked<o:p></o:p></span></p><p class=MsoNormal><span \
lang=EN-US>0x00007f839224f9f3</span><span lang=EN-US \
style='font-family:宋体'>&nbsp;</span><span lang=EN-US> __pthread_cond_wait + \
0x243<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>----------------- 1480 \
-----------------<o:p></o:p></span></p><p class=MsoNormal><span \
lang=EN-US>----------------- 1481 -----------------<o:p></o:p></span></p><p \
class=MsoNormal><span lang=EN-US>&quot;Reference Handler&quot; #2 daemon prio=10 \
tid=0x0000000000c36000 nid=0x5c9 waiting on condition \
[0x00007f8376d15000]<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US \
style='font-family:宋体'>&nbsp;&nbsp;</span><span lang=EN-US> \
java.lang.Thread.State: RUNNABLE<o:p></o:p></span></p><p class=MsoNormal><span \
lang=EN-US style='font-family:宋体'>&nbsp;&nbsp;</span><span lang=EN-US> JavaThread \
state: _thread_blocked<o:p></o:p></span></p><p class=MsoNormal><span \
lang=EN-US>0x00007f839224f9f3</span><span lang=EN-US \
style='font-family:宋体'>&nbsp;</span><span lang=EN-US> __pthread_cond_wait + \
0x243<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>----------------- 1482 \
-----------------<o:p></o:p></span></p><p class=MsoNormal><span \
lang=EN-US>&quot;Finalizer&quot; #3 daemon prio=8 tid=0x0000000000c3a000 nid=0x5ca in \
Object.wait() [0x00007f8376c14000]<o:p></o:p></span></p><p class=MsoNormal><span \
lang=EN-US style='font-family:宋体'>&nbsp;&nbsp;</span><span lang=EN-US> \
java.lang.Thread.State: WAITING (on object monitor)<o:p></o:p></span></p><p \
class=MsoNormal><span lang=EN-US style='font-family:宋体'>&nbsp;&nbsp;</span><span \
lang=EN-US> JavaThread state: _thread_blocked<o:p></o:p></span></p><p \
class=MsoNormal><span lang=EN-US>0x00007f839224f9f3</span><span lang=EN-US \
style='font-family:宋体'>&nbsp;</span><span lang=EN-US> __pthread_cond_wait + \
0x243<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>----------------- 1483 \
-----------------<o:p></o:p></span></p><p class=MsoNormal><span \
lang=EN-US>&quot;Signal Dispatcher&quot; #4 daemon prio=9 tid=0x0000000000c56800 \
nid=0x5cb runnable [0x0000000000000000]<o:p></o:p></span></p><p class=MsoNormal><span \
lang=EN-US style='font-family:宋体'>&nbsp;&nbsp;</span><span lang=EN-US> \
java.lang.Thread.State: RUNNABLE<o:p></o:p></span></p><p class=MsoNormal><span \
lang=EN-US style='font-family:宋体'>&nbsp;&nbsp;</span><span lang=EN-US> JavaThread \
state: _thread_blocked<o:p></o:p></span></p><p class=MsoNormal><span \
lang=EN-US>0x00007f83922526d6</span><span lang=EN-US \
style='font-family:宋体'>&nbsp;</span><span lang=EN-US> do_futex_wait.constprop.1 + \
0x36<o:p></o:p></span></p><p class=MsoNormal><span \
lang=EN-US><o:p>&nbsp;</o:p></span></p><p class=MsoNormal><span lang=EN-US>The issue \
existed even after I disable the selinux. It can not be reproduced on oracle linux \
7.4.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>The kernel version on \
Ubuntu or fedora is 4.15. the kernel version on RHEL 8 Beta is 4.18. the kernel \
version on Oracle linux 7.4 is 3.1.<o:p></o:p></span></p><p class=MsoNormal><span \
lang=EN-US>I can not find any existed bug for now.<o:p></o:p></span></p><p \
class=MsoNormal><span lang=EN-US><o:p>&nbsp;</o:p></span></p><p class=MsoNormal><span \
lang=EN-US><o:p>&nbsp;</o:p></span></p><p class=MsoNormal><span lang=EN-US>Is there \
any clue about this issue?<o:p></o:p></span></p><p class=MsoNormal><span \
lang=EN-US><o:p>&nbsp;</o:p></span></p><p class=MsoNormal><span lang=EN-US>Any reply \
will be appreciated.<o:p></o:p></span></p><p class=MsoNormal><span \
lang=EN-US><o:p>&nbsp;</o:p></span></p><p class=MsoNormal><span lang=EN-US>Best \
Regards<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Gao Shuai from \
GCS<o:p></o:p></span></p></div></body></html>



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